Using Banggood’s “200mw laser module“, A heat sink, a 16340 holder and battery, and a button, I made this. It puts out around 250mw and thanks to the heatsink and doesn’t have to turn off to cool.
The module has a built-in driver so it can be powered straight from the battery.
The finished product, featuring one 16340 battery in a holder, a small diode and heatsink, and a tactile push button.
The Altoids laser as viewed from the front.
The Altoids laser when turned on
The case is still able to close fully and still maintain operation.
The back of the device could use a little work. Tightening the bolts scratched up the ink, so I may paint it in the future.
Here’s what it looks like on and firing.